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(- el.) 5 Sheets-Sheet 1. O. G. 8; L. TIEFEL.

ELEVATOR. No 333 701 Patented Jan. 5, 1886.

3 (No Model.) 5 Sheets-Sheet 2. O. G. 85 L. TIEPEL.

. ELEVATOR.

No. 333,701. x 3 Patented Jan. 5,1886.

(No Model.) 5 Sheets-Sheet 3.

O. G. & L. TIEPEL.

ELEVATOR.

No. 333,701. Patented Jan. 5, 1886.

I AM filmy 3",

(N9 Mode1 I 5 Shees-Sheet 4. 0. G. &'L. TIEPEL ELEVATOR.

No. 333,701. Patented Jan. 5, 1886.

(No Model.) 5 Sheets-Sheet 5.

O. G. L. TIBFEL.

ELEVATOR.

No. 333,701. Patented Jams, 1886.

N PETERS. Pl ow'L iho D. c.

UNITED STATES PATENT OFFICE.

CHARLES G. TIEFEL AND LEONARD TIEFEL, OF ROCHESTER, NEW YORK.

ELEVATO R.

SPECIFICATION forming part of Letters Patent No. 333,701, dated January 5, 1886.

Application filed October 21, 1885. Serial No. 180,498.

T 0 all whom it may concern.-

Be it known that we, CHARLES G. TIEFEL and LEONARD TIEFEL. of Rochester, in the county of Monroe and State of New York, have invented a new and useful Improvement in Elevators, which improvement is fully set forth in the following specification and shown in the accompanying drawings.

The object of our invention is to produce an improved freight or passenger elevator, the improvement consisting in the method of opening and closing the safety-gates at the various doorways passed by the car in its vertical movements, said gates being opened and closed automatically by the car as it passes them, the invention being fully set forth hereinbelow, and more particularly pointed out in the claims.

Referring to the drawings, Figure 1, Sheet 1, is a front elevation ofthe lower portion of a vertical railway or elevator, the view being taken from a point within the shaft or well, showing the car at the bottom thereofand the lower gate raised, the gate next above or at the second floor being down,to guard thedoorway thereat, parts of the tracks or guides for the car and slides for the counter-weights for the respective gates being broken away; Fig. 2, Sheet 2, a

similar view ofourirnproved elevatolzshowing the car as raised toward the second fioor with the lower gate down, to guard the doorway of the first floor, the car being in position to commence to raise the gate of the second floor, parts being broken away and other parts not essential to the figure omitted; Fig. 3, Sheet 3, a side elevation of the same, viewed as indicated by arrow 00 in Fig. 1, drawn to further show the devices for operating the gates, a part of one of the guides for the car and other parts being broken away and omitted; Fig. 4., a view of a portion of the trip and lifting device for the gates, seen as indicated by arrows yin Fig. 8, Sheet 4, a portion of one wall of the inolosure being transversely sectioned, as on the dotted line 2 in said latter figure, said Fig. 4 being drawn to show further the form and arrangement of certain operating parts of the device; Fig. 5, Sheet 4, a side elevation of a portion of the lower part of the car, drawn to better show the latch for operating the gates, the floor and a part of (No model.)

one wall of the shaft being vertically sectioned, as on the dotted line 00 in Fig. 1, viewed in the direction indicated by arrow as in said latter figure, parts being broken away and omitted, the parts being viewed from the same direction in which Fig. 3 is seen; Fig. 6, a similar view of the latch and tripping device, showing the latter as having encountered the trip and tilted toa position to release the catch of the counter-weight; Fig. 7, a view of some of the parts from the same direction from which Figs. 5 and 6 are seen, showing the turtle-head or lifter for the gate as it hasjust reached in its ascent the catch of the gate of the second floor. Fig. 8 shows the same parts after the car has gone farther up, the lifter being tilted by the tripper to release the gate;

and Fig. 9, Sheet 5, a plan of the car and other.

parts, further showing the slides for the counter-weights and gates and the lifter for the latter, with a part of a wall of the shaft, said slides and the tracks for the car being horizontally sectioned, as upon the dotted line y in Fig. 1.

Referring to the parts, Ais a portion of the Wall-of the shaft of the elevator, through which the doorways are formed at the various floors; B, the vertical tracks or guides for the car; 0, the car; D, the upper cross-timbers of the car, and b the cable by which the car is suspended.

E is the gate for the lower doorway, G, and F the gate for the doorway H at the second floor, which gates are fitted to move up and down along vertical slides f at the sides of said doorways as they are moved by the car in passing them. The lower gate is substantially balanced by a counter-weight, d, which is connected with said gate by means of a cord, (1, leading from the top of the gate over pulleys c and e, secured to the wall of the shaft. The gate F at the second floor is similarly counterbalanced by a weight, g, suspended from a cord, h, passing over pulleys i and 7c. The gates are each designed to be slightly heavier than their respective counter-weights, so that when left to themselves they will descend by gravity to their respective floors to guard or close the doorways thereof, each drawing its weight upward as it descends. The counterweights of the gates of the various stories all move upward and downward in a vertical race, I, between the slide f, and an opposing slide, Z, as they and the gates are respectively operated by the car, as above stated.- Each gate above the first one is provided with a projecting catch, 1, at its upper side, which catches of the successive gates are en countered,

when the car moves upward, by a lifting device, 19, held above the car at the end of a bent arm, L. The turtlehead or part p of the lifting device occupies a slot, 0, in the arm L, and is pivoted upon a horizontal pin, 8, held by the arm so as to turn to a limited extentin a vertical plane. The part 1) is held so as to be prevented from turning downward upon its pivot 8 below the position shown in Figs. 3 and 7, but may tilt upward, as shown in Fig. 8. By the tilting of the part 19, as shown in Fig. 8, as the car moves upward, said part releases its hold upon the catch 1, thus ceasing to further raise the gate, leaving the latter to be controlled or regulated in its movements by other means, described further on. The turtle-head is provided with a roller, it, held upon a horizontal pin, a, rigid with said head, which roller rolls along the trip it as the car moves upward, said partp falling back from gravity to its normal position after passing said trip. The trip tis secured to the wall A of the shaft in position to be encountered by the roller u as the car moves up or down within the shaft. The trip shown is a simple vertical plate of metal made high at the. middle and inclined each way therefrom, so that the roll, as the car moves in either direction, may roll along either incline over the apex of the trip, causing the part 12 in either case to tilt away from the catch 1'. In moving upward the part-1) is tilted by said trip, to release the gate, and in moving downward said part is tilted to get under the catch 0*, to prevent the gate from falling, as will be further on fully explained. The lifter operates upon each gate the same, excepting as to the lower one. The catches r of the respective gates and the lifter are relatively so placed that said lifter carries each gate upward as the platform of the car approaches the floor to which the gate belongs, the latter being fully raised out of the way by the time the platform reaches said floor.

The various gates are further in part operated by the following means: I) is a latch secured to the platform 0 of the car, and pivoted at c, to turn in a vertical plane. Each one of the counter-weights d g, 820., of the respective gates is formed with a projecting lip, 11., at its lower end in position to catch upon the latch b as the car moves downward. This latch is provided with a horizontal pin or roll, 6, projecting outward at the side thereof, and trips d, like those above described to operate the turtle-head, are secured to the wall A in position to be encountered by said \Vhen the latch is tilted, as shown in Fig. 6, by the pin e of the same passing over the apex of the trip d as the car descends, the

point of said latch is drawn off the lip n and releases its hold upon the weight; or, in case the car is ascending, the latch is tilted by the trip, to allow it to pass above said lip n and prevent the rapid ascent of theweight from the downward pull of the gate. The latch is held to the car, so that it may be tilted downward, but is prevented from being tilted above the position shown in Fig. 5, thus presenting a rigid bearing upon the upper sides of the lips n of the several counterweights. The latch returns from gravity to its normal position immediately after passing each of the trips.

The car is intended to be suspended by cables in the usual manner, our invention relating wholly to the manner of operating the gates,which is as follows: \Vith the car at the bottom of the well or shaft, the latch b, bearing upon the lip n of the counterweight d of the lower gate, holds said weight down and the gate open, the platform of the car being at the level of the floor. As the car is slowly raised, the counter-weight dfollows it upward from the pull of the gate on the cord, the latch b preventing said gate from moving downward more rapidly than the car moves upward. Continuing upward, the car leaves said counter-weight when the gate E is down, and, next, the turtle-head p encounters the catch 1" of the gate F of the second floor and carries said gate upward, as above mentioned, so as to open the doorway H of the second floor for the approaching car. WVhen the floor of the car is even with the floor of the building, the gate being fully up,the turtle-head releases the catch 1* by passing over the trip it, as above stated; but before the gate is thus released the latch b has tilted by and above the lip n of the weight g connected with said gate, which latter is thus prevented from suddenly falling, on account of its preponderance of weight, but can only descend gradually as the car ascends, and in the same manner in which the first car made its descent at the starting upward of the car. The car, continuing its upward motion, leaves the counter-weight y when the gate F has descended to its floor. A further upward motion of the car operates on the respective gates above it in the same manner, excepting as to the uppermost gate, which is simply carried up with the car by the catch 1' and held until the car descends, allowing the gate to descend with it. In the descent of the car the latch b encounters the projecting lips n ofthe counter-weights of the successive gates below. the upper one, carrying said counter-weights down and raising the gates, as stated. The parts are so arranged that when the floor of the car in its descent is even with the various floors of the building the gate at each floor will be fully up and the doorway open ready for use, the operation being the same for each gate,excepting the lowest one, which it simply raises as it carries the counter-weight of said gate downward, as stated. All the time the car is down the lower gate is up, and during all the time the car is at the upper floor the gate of that floor is up. The upper gate is provided with a lifter, 1", but its counter-weight has no pro- 5 jecting lip n. The counter-weight of the lower gate is provided with alip, n, but has no lifter r. The intermediate gates are each provided with a catch, 4, and the respective weights with lips n. Briefly,the car,in ascending,lifts each gate in succession, excepting the lower one, by engaging the various catches a", and in descending it lifts each gate in succession by carrying down the various counterweights. By this construction and arrangement of parts the gate of each doorway is lifted out of the way as the car reaches the successive floors in moving either upward or downward, said gates being closed again when the car passes them, and the open doorways are no longer needed.

We are aware that it is not broadly new to provide a vertically-moving door and counterbalance-weight with catches, in combination with an elevator, movable pieces for engaging with said catches, to automatically control the rising and falling of said door, and stationary trips for automatically forcing said pieces from said catches. Such a construction we therefore do not broadly claim.

What we claim as ourinvention is 1. The slotted arm or bar L, attached to the elevator-carriage, in combination with latch 10, pivoted in the slot t-l1ereof,roller u, attached to said latch, a catch-piece, r, on the gate F, arranged to be engaged and lifted by said pivoted latch, and a fixed doublyinclined trip, t, on which said roller travels to free said latch from said catch, substantially as set forth.

2. An elevator-carriage provided with a tilting latch, b, and a stop arranged below the inner end of said latch, in combination with a vertically-movable gal e, a counter-balance for said gate provided with a catch adapted to engage with said latch, and a stationary doubly-inclined trip, and a pin or roll attached to said latch and arranged to come into contact with said trip, and thus free the latch from the catch and allow it to pass above thelatter, for the purpose of checking the ascent of the weight and the descent of the gate, substantially as set forth.

CHAS. G. TIEFEL. LEONARD TIEFEL.

Witnesses:

E. B. WHITMORE, H. B. KNIGHT. 

